Calking vessels



(No Model.)

3.13. GASWBLLJL GALKING VESSELS. l

' BY @AM lpccww ATTORNEY.

UNITED STATES PATENT OFFICE.

ROBERT B. CASlVELL, JR., OF BALTIMORE, MARYLAND.

CALKINGVESSELS.

SPECIFICATION forming part of Letters Patent No. 430,375, dated J une17, 1890.

Application filed April 22, 1890. Serial No. 349,048, '(Ilo model.)

T0 @ZZ whom, t may concern.'

Be it known that I, ROBERT B. CASWELL, r., a citizen of the UnitedStates, residing at Baltimore, in the State of Maryland, have inventedcertain new and useful Improvements in Calking Vessels, of which thefollowing is a specification.

This invention relates to a new and useful improvement for filling theseams between the planks of 'vessels or planks used for any otherpurpose, so as to make said seams water-tight. The ordinary term forthis operation is calking.

The drawings illustrate the invention.

Figures l and 2 show a seam between two planks calked according to myinvention- Figs. 3, 4, and 5 show seams illustrating a modification ofthe calking.

Theimprovement may be used with or withoutoakum.ThedrawingsillustratebothWays.

In Figs. .l and 2 oakum ay is first driven,as usual, in the seam l)between the planks c. In doing this space must be left in the seam ontop of the oakum for the lead filling Cl, which is the feature of myinvention. I use sheetlead strips Cl, which are broad enough to foldlongitudinally along both edges, as indicated at f. A strip of thisfolded sheetlead is then driven in the prepared seam by a calking-ironand mallet or beetle. The soft lead under the action of the calking-ironspreads and Wedges in the seam very tight, and forms in cross-section asort of lead dovetail in the seam. The lead confines the oakunl, and thesecure hold of the lead on the Wood makes a permanently-tight seam.

The slieet-lead may be used alone without oakum, as in Figs. 3 and 4. Inthis case the seam is first opened, as usual, by a reamingiron, andafter this preparation of the seam the strip of sheet-lead is forced in,as VAalready described.

The herein-described calking for seams and the method of filling theseams, considered as an invention, are interdependent, or have suchnecessary relation as to constitute a unitaryinvention. I therefore makeclaim to both.

Having described my invention, I claiml. The herein-describedimprovement in calking, consisting inthe use of strips of lead driven inthe seam between planks to form therein a wedge or dovetail.

2. The method of calking seams, consisting of preparing or opening theseam as usual, then placing sheet-lead strips folded longitudinallyalong the seam, and driving the same into the seam with suitable toolsuntil the lead forms a wedge 0r dovetail.

In testimonywhereof I affix my signature in the presence of twoWitnesses.

ROBERT B. OASVELL, JR.

Witnesses:

J om1 E. MoRRrs, JN0. T. MADDoX.

